So on to printing.
Well it's not gone so well. To recap, the previous wing was made up of 50mm sections. These were made of ABS and printed OK. These are about 180mm long. ABS can be difficult to print given its propensity to crack and warp if printed in large blocks, it's a cooling thing. That's what happened to my prints. After three attempts I've given up with ABS. The last attempt was with a slurry of Prit and Elnet hair spray, even that didn't hold the print to the bed.
I'm reluctant to use PLA on a part that could see significant strain on it so I've had a browse on the web and ordered some PLA+ from a company called Rigid Ink. This won't be here for a couple of days so there is a pause in production and this thread.
ABS is strong but prone to warping and not sticking to the print bed.
PLA is very easy to print but is nowhere near as strong as ABS.
PLA+ is supposed to be nearly as easy to print as PLA and nearly as strong as ABS. We'll give it a go and see. I suppose finding the right material to print with is just part of the learning curve.
Hope to be back in a couple of days.
Forgot to say, thinking ahead to the assembly stage I've ordered a 1200mm sash clamp (cramp) to clamp it all together. Never needed one of these anywhere near as long before, but I'm an engineer not a chipy (carpenter)